fix: blink config

ts/index.html

@@ -135,16 +135,18 @@
         label: "Blink (animation)",
         make() {
           return new MonoDisplayFile({
-            elements_always: [{
+            elements_always: {
+              flags: { drawFront: true, clearBuffer: true },
+              elements: [{
                 type: ElementType.Animation,
                 width: W, height: H,
-              // updateInterval: 0 = advance every tick (25fps → ~400ms/frame at fps=25 with 2 frames)
                 updateInterval: 12, // every 13 ticks ≈ 500ms per frame at 25fps
                 frames: [
                   { pixels: new Uint8Array(W * H).fill(1) },
                   { pixels: new Uint8Array(W * H).fill(0) },
                 ],
               }],
+            },
           }).toBuffer();
         },
       },